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McCabe & Barton

Senior Java Data Engineer

On site

London, United kingdom

Senior

Freelance

24-02-2026

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Skills

Communication Python Java Data Engineering MongoDB Problem-solving Research Attention to detail Linux git Large Language Models Kafka PostGres Mathematics

Job Specifications

Senior Software Engineer - Data Engineering
Contract duration:- 6 months initially (with extension available for the right person)
Location:- London EC4
Hybrid working: 3 days per week in office + 2 days WFH
Rate: £500-£600 inside IR35
Join our Data Engineering team at the heart of a quantitative investment firm, powering the infrastructure which drives our systematic trading strategies and cutting-edge discretionary research. You'll help architect a multi-petabyte scale estate, processing billions of datapoints daily from thousands of data sources. Our stack combines Java and Python, with foundations of Kafka, ArcticDB, MongoDB, and more. This is an opportunity to tackle complex distributed systems challenges at exceptional scale.
What you bring to the role
Experience working with large scale messaging and downsampling solutions
Strong academic record and a degree with high mathematical and computing content eg Computer Science, Mathematics, Engineering or Physics
5-7 years of professional experience in software engineering with Java as your primary language and some experience in Python
Proficient on Linux platforms and strong understanding of Git
Deep knowledge of one or more relevant database technologies such as Iceberg, Postgres, or MongoDB
Strong problem-solving skills and attention to detail
Strong communication and collaboration abilities
Ability to work independently and gather requirements from stakeholders
Experience in Banking/Asset Management/Financial Services
Advantageous to have
Familiarity with distributed systems and orchestration
Experience with performance optimization and large-scale data processing
Contributions to open-source projects
Experience working with Large Language Models (LLMs)

About the Company

McCabe & Barton are part of the Holley Holland Group. Having built our reputation on successfully delivering cross-functional results within Technology & Business, Change and Transformation, for 20 years, we are respected and regarded as an industry leader in recruitment research and execution. By developing long term relationships with our clients, acting as an extension of their business, identifying and engaging suitable candidates on their behalf, we have established ourselves as a trusted partner. We are a member of ... Know more